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Merge pull request #373 (unify syntax of recipe with syntax of the index)

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Reto Kromer 2019-02-28 17:45:43 +01:00 committed by GitHub
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@ -623,7 +623,7 @@
<label class="recipe" for="change_DAR">Change display aspect ratio without re-encoding</label> <label class="recipe" for="change_DAR">Change display aspect ratio without re-encoding</label>
<input type="checkbox" id="change_DAR"> <input type="checkbox" id="change_DAR">
<div class="hiding"> <div class="hiding">
<h3>Change Display Aspect Ratio without reencoding video</h3> <h3>Change Display Aspect Ratio without re-encoding video</h3>
<p><code>ffmpeg -i <em>input_file</em> -c:v copy -aspect 4:3 <em>output_file</em></code></p> <p><code>ffmpeg -i <em>input_file</em> -c:v copy -aspect 4:3 <em>output_file</em></code></p>
<dl> <dl>
<dt>ffmpeg</dt><dd>starts the command</dd> <dt>ffmpeg</dt><dd>starts the command</dd>
@ -680,7 +680,7 @@
<img src="./img/colourspace_metadata_mediainfo.png" alt="MediaInfo screenshots of colorspace metadata"><br> <img src="./img/colourspace_metadata_mediainfo.png" alt="MediaInfo screenshots of colorspace metadata"><br>
<p><span class="beware">⚠</span> Using this command it is possible to add Rec.709 tags to a file that is actually Rec.601 (etc), so apply with caution!</p> <p><span class="beware">⚠</span> Using this command it is possible to add Rec.709 tags to a file that is actually Rec.601 (etc), so apply with caution!</p>
<p>These commands are relevant for H.264 and H.265 videos, encoded with <code>libx264</code> and <code>libx265</code> respectively.</p> <p>These commands are relevant for H.264 and H.265 videos, encoded with <code>libx264</code> and <code>libx265</code> respectively.</p>
<p><strong>Note:</strong> If you wish to embed colorspace metadata <em>without</em> changing to another colorspace, omit <code>-vf colormatrix=src:dst</code>. However, since it is <code>libx264</code>/<code>libx265</code> that writes the metadata, it’s not possible to add these tags without reencoding the video stream.</p> <p><strong>Note:</strong> If you wish to embed colorspace metadata <em>without</em> changing to another colorspace, omit <code>-vf colormatrix=src:dst</code>. However, since it is <code>libx264</code>/<code>libx265</code> that writes the metadata, it’s not possible to add these tags without re-encoding the video stream.</p>
<p>For all possible values for <code>-color_primaries</code>, <code>-color_trc</code>, and <code>-colorspace</code>, see the FFmpeg documentation on <a href="https://ffmpeg.org/ffmpeg-codecs.html#Codec-Options" target="_blank">codec options</a>.</p> <p>For all possible values for <code>-color_primaries</code>, <code>-color_trc</code>, and <code>-colorspace</code>, see the FFmpeg documentation on <a href="https://ffmpeg.org/ffmpeg-codecs.html#Codec-Options" target="_blank">codec options</a>.</p>
<hr> <hr>
<p id="fn1" class="footnote">1. Out of step with the regular pattern, <code>-color_trc</code> doesn’t accept <code>bt470bg</code>; it is instead here referred to directly as gamma.<br> <p id="fn1" class="footnote">1. Out of step with the regular pattern, <code>-color_trc</code> doesn’t accept <code>bt470bg</code>; it is instead here referred to directly as gamma.<br>